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Home›Repair guides›Test Step 10. Create an Open Circuit at the Sensor Connector.

Caterpillar — Test Step 10. Create an Open Circuit at the Sensor Connector.

A Caterpillar service procedure — check it applies to your exact model before use.

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Procedure

  1. A. Turn the ECS to the OFF/RESET position.
  2. B. Disconnect the suspect sensor.
  3. C. Turn the ECS to the ON position. The engine should be OFF.
  4. D. The CID-FMI should change from 04 to 03.

Source: manual:Engine Sensor Test 3500B.pdf. Figures and steps are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.